Growing octane needs widen the price spread between premium and regular gasoline (1/4/2018)

In late 2016, the difference between U.S. average retail prices for premium and regular gasoline reached 50 cents per gallon. This price spread has been generally expanding since 2000, and the rate at which the spread has grown has accelerated over the past three years (Figure 1). Many factors on both the supply and demand sides are likely influencing this trend. ... More »